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kern: add new overflow checks on KMemoryRegions

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This commit is contained in:
Michael Scire
2020-12-01 17:14:23 -08:00
parent 866310937a
commit a56bdab820
8 changed files with 32 additions and 1 deletions
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libraries/libmesosphere/source/kern_k_memory_layout.board.nintendo_nx.cpp
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@@ -55,6 +55,7 @@ namespace ams::kern {
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(start, size, phys_type, attr));
const KMemoryRegion *phys = KMemoryLayout::GetPhysicalMemoryRegionTree().FindByTypeAndAttribute(phys_type, attr);
MESOSPHERE_INIT_ABORT_UNLESS(phys != nullptr);
MESOSPHERE_INIT_ABORT_UNLESS(phys->GetEndAddress() != 0);
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetVirtualMemoryRegionTree().Insert(phys->GetPairAddress(), size, virt_type, attr));
}
@@ -104,6 +105,7 @@ namespace ams::kern {
void SetupPoolPartitionMemoryRegions() {
/* Start by identifying the extents of the DRAM memory region. */
const auto dram_extents = KMemoryLayout::GetMainMemoryPhysicalExtents();
MESOSPHERE_INIT_ABORT_UNLESS(dram_extents.GetEndAddress() != 0);
/* Determine the end of the pool region. */
const uintptr_t pool_end = dram_extents.GetEndAddress() - KTraceBufferSize;